Mohs hardness 6 rocks & minerals
Mohs hardness 6 is orthoclase feldspar — the boundary where a steel knife stops working as a scratch tool. Glass usually gives way.
Showing 721–840 of 1497 rocks (page 7 of 13).
Karliteraremineral · Mohs 6colorless, white, gray
Katoiteraremineral · Mohs 6white, colorless, pale yellow
Katophoriteraremineral · Mohs 5-6dark brown, brownish red, black
Katoptriteraremineral · Mohs 5-6black
Keiviite-(Yb)raremineral · Mohs 5-6colorless, white, yellowish-white- No imageKeldyshiteraremineral · Mohs 5-6white, colorless, gray
- No imageKenoplumbomicroliteraremineral · Mohs 5-5.5yellow, brown, orange
Kentbrooksiteraremineral · Mohs 5-6brown, yellow-brown, pinkish-brown- No imageKerimasiteraremineral · Mohs 6.5-7black
Keweenaw Agatecommonmineral · Mohs 6.5-7red, orange, white
Khesiniteraremineral · Mohs 5-6black, brown
Khomyakoviteraremineral · Mohs 5-6red, orange-red
Khristovite-(Ce)raremineral · Mohs 6-7brown, yellowish-brown
Killalaiteraremineral · Mohs 5.5colorless, white
Kingman Turquoisecommonmineral · Mohs 5-6blue, green, blue-green
Kircheriteraremineral · Mohs 5-6colorless, white, yellow
Kirschsteiniteraremineral · Mohs 6yellowish-green, brownish, colorless
Kleberiteraremineral · Mohs 5-6black, brown- No imageKnife River Flintuncommonmineral · Mohs 6.5-7brown, dark brown, yellowish-brown
- No imageKoashviteraremineral · Mohs 5-6red, brownish-red, yellow-brown
Kobeite-(Y)raremineral · Mohs 5-6black, brownish black- No imageKolfaniteraremineral · Mohs 6.5-7.5yellow, brown, reddish-brown
Koliciteraremineral · Mohs 5-6orange, reddish-orange
Komatiiterareigneous · Mohs 5-6dark gray, greenish-gray, black
Kornerupineraremineral · Mohs 6.5-7green, yellowish-green, brown
Kosmochlorraremineral · Mohs 6-6.5emerald-green, dark green
Kotoiteraremineral · Mohs 6.5white, gray, yellow
Krinoviteraremineral · Mohs 6-7dark green, emerald green
Krutoviteraremineral · Mohs 5.5white, pale gray- No imageKulleruditeraremineral · Mohs 5-6silver-white, tinfoil-white
Kumdykoliteraremineral · Mohs 6white, colorless
Kunziteuncommongemstone · Mohs 6.5-7pink, violet, lilac- No imageKuratiteraremineral · Mohs 6-7black, dark brown
- No imageKushiroiteraremineral · Mohs 6-7green, dark green, black
Kyanitecommonmineral · Mohs 4.5-7blue, colorless, white- No imageKyanite Bladescommonmineral · Mohs 4.5-7blue, white, gray
- No imageKyanoxaliteraremineral · Mohs 5-6white, colorless
Kyawthuiteraremineral · Mohs 5.5orange, reddish-orange- No imageKyzylkumiteraremineral · Mohs 5-6dark brown, black
Labradoritecommonmineral · Mohs 6-6.5gray, gray-green, blue
Labuntsovite-Feraremineral · Mohs 5-6orange, brown, yellow- No imageLabyrinthiteraremineral · Mohs 5-6pink, reddish-brown
Laguna Agateuncommonmineral · Mohs 6.5-7red, orange, yellow
Laihuniteraremineral · Mohs 5-6reddish-brown, brown, black
Lakargiiteraremineral · Mohs 5-6yellow, brown, colorless
Lake Superior Agatecommonmineral · Mohs 6.5-7red, orange, yellow- No imageLandauiteraremineral · Mohs 5-6black
Långbaniteraremineral · Mohs 6-6.5black, iron-black- No imageLangisiteraremineral · Mohs 5-5.5pinkish-white, pale brass
Lapis Lazulicommonmineral · Mohs 5-5.5blue, deep blue, ultramarine- No imageLaptevite-(Ce)raremineral · Mohs 5-6yellow, brown
Larniteraremineral · Mohs 6white, colorless, gray
Larvikitecommonigneous · Mohs 6gray, blue, black
Latiumiteraremineral · Mohs 5-6colorless, pale yellow, white- No imageLatrappiteraremineral · Mohs 5-6black, brownish-black
- No imageLaurentianiteraremineral · Mohs 5-6white, colorless, gray
Laurentthomasiteraremineral · Mohs 6blue, blue-green
Låveniteraremineral · Mohs 6yellow, brown, reddish-brown- No imageLaveroviteraremineral · Mohs 5-6yellow, brown
- No imageLavic Jaspercommonmineral · Mohs 6.5-7red, brown, tan
Lavinskyiteraremineral · Mohs 6-6.5deep blue, violet-blue
Lavoisieriteraremineral · Mohs 6-7dark brown, reddish-brown
Lazuliteuncommonmineral · Mohs 5.5-6azure blue, blue, sky blue
Lazuriteuncommonmineral · Mohs 5-5.5blue, azure, violet-blue
Lechatelieriteuncommonmineral · Mohs 5.5-6.5colorless, white, gray
Leifiteraremineral · Mohs 6colorless, white, pale blue- No imageLeopard Skin Jaspercommonmineral · Mohs 6.5-7brown, tan, black
Leoparditecommonmineral · Mohs 6-7white, cream, brown
Leucitecommonmineral · Mohs 5.5-6white, gray, colorless
Leucophoeniciteraremineral · Mohs 5.5-6red, pink, brownish-red- No imageLeucopyriteuncommonmineral · Mohs 5.5-6silver-white, steel-gray
Leucospheniteraremineral · Mohs 6white, yellow, brown
Levantitecommonmineral · Mohs 6.5-7white, gray, brown
Liberiteraremineral · Mohs 5-6white, colorless, yellowish-white
Libyan Desert Glassraremineral · Mohs 6-7yellow, milky white
Liebauiteraremineral · Mohs 5-6white, colorless, pale yellow
Liebenbergiteraremineral · Mohs 6.5-7yellow, yellow-green, brown- No imageLiebermanniteraremineral · Mohs 6-7black
Limonitecommonmineral · Mohs 4-5.5yellow, brown, reddish-brown- No imageLimonite Cubescommonmineral · Mohs 4-5.5brown, yellow-brown, black
- No imageLindqvistiteraremineral · Mohs 5-6black
Lindsleyiteraremineral · Mohs 6-7black- No imageLinguniteraremineral · Mohs 6black, dark green
Linnaeiteuncommonmineral · Mohs 4.5-5.5steel-gray, pale pinkish-gray, silver-white- No imageLintoniteuncommonmineral · Mohs 5-5.5green, yellow-green, blue-green
- No imageLiottiteraremineral · Mohs 6colorless, white
- No imageLipuiteraremineral · Mohs 6.5-7.5reddish-brown, brown, black
Lisetiteraremineral · Mohs 6white, colorless, gray- No imageLisitsyniteraremineral · Mohs 6.5colorless, white
Lithiomarsturiteraremineral · Mohs 5.5-6pink, reddish-pink, brownish-pink- No imageLithiowodginiteraremineral · Mohs 5.5-6black, dark brown
Lithositeraremineral · Mohs 5-6colorless, white
Litidioniteraremineral · Mohs 5-6blue, pale blue- No imageLiuiteraremineral · Mohs 6-7silver-white, gray
Llaniterareigneous · Mohs 6-7brown, reddish-brown, gray
Lodestonecommonmineral · Mohs 5.5-6.5black, iron-black
Löllingiteuncommonmineral · Mohs 5.5-6silver-white, steel-gray
Lopariteraremineral · Mohs 5.5black, brownish-black- No imageLoranskite-(Y)raremineral · Mohs 5-6black, brownish-black
Lorenzeniteraremineral · Mohs 6brown, reddish-brown, gray- No imageLouisiana Opaluncommonmineral · Mohs 5.5-6brown, tan, gray
Loveringiteraremineral · Mohs 6-7black, brownish-black
Lueshiteraremineral · Mohs 5.5black, brownish-black- No imageLuogufengiteraremineral · Mohs 6-6.5black, brownish-black
Macedoniteraremineral · Mohs 5.5-6black, brown
Macfalliteraremineral · Mohs 5.5brown, reddish-brown
Maghemiteuncommonmineral · Mohs 5-6brown, reddish-brown, black
Magnesio-arfvedsoniteraremineral · Mohs 5-6black, dark green, dark blue- No imageMagnesio-ferri-fluoro-hornblenderaremineral · Mohs 5-6dark green, brownish green, black
- No imageMagnesio-ferri-hornblendecommonmineral · Mohs 5-6dark green, brown, black
- No imageMagnesio-fluoro-arfvedsoniteraremineral · Mohs 5-6black, dark blue, dark green
- No imageMagnesio-fluoro-hastingsiteraremineral · Mohs 5-6dark green, black, brownish-black
Magnesio-hastingsiteuncommonmineral · Mohs 5-6dark green, brownish black, black
Magnesio-hornblendecommonmineral · Mohs 5-6dark green, brownish-green, black
Magnesio-riebeckiteuncommonmineral · Mohs 5-6blue, dark blue, lavender blue
Magnesiocarpholiteraremineral · Mohs 5-5.5white, yellowish, pale yellow
Magnesiochloritoidraremineral · Mohs 6.5dark green, black, gray
Magnesiochromiteuncommonmineral · Mohs 5.5black, brownish-black- No imageMagnesiocoulsoniteraremineral · Mohs 5.5-6.5black
Magnesioferriteuncommonmineral · Mohs 6-6.5black
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